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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #if V8_TARGET_ARCH_PPC | 5 #if V8_TARGET_ARCH_PPC |
6 | 6 |
7 #include "src/ast/scopes.h" | 7 #include "src/ast/scopes.h" |
8 #include "src/code-factory.h" | 8 #include "src/code-factory.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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201 } | 201 } |
202 function_in_register_r4 = false; | 202 function_in_register_r4 = false; |
203 // Context is returned in r3. It replaces the context passed to us. | 203 // Context is returned in r3. It replaces the context passed to us. |
204 // It's saved in the stack and kept live in cp. | 204 // It's saved in the stack and kept live in cp. |
205 __ mr(cp, r3); | 205 __ mr(cp, r3); |
206 __ StoreP(r3, MemOperand(fp, StandardFrameConstants::kContextOffset)); | 206 __ StoreP(r3, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
207 // Copy any necessary parameters into the context. | 207 // Copy any necessary parameters into the context. |
208 int num_parameters = info->scope()->num_parameters(); | 208 int num_parameters = info->scope()->num_parameters(); |
209 int first_parameter = info->scope()->has_this_declaration() ? -1 : 0; | 209 int first_parameter = info->scope()->has_this_declaration() ? -1 : 0; |
210 for (int i = first_parameter; i < num_parameters; i++) { | 210 for (int i = first_parameter; i < num_parameters; i++) { |
211 Variable* var = | 211 Variable* var = (i == -1) ? scope()->receiver() : scope()->parameter(i); |
212 (i == -1) ? info->scope()->receiver() : info->scope()->parameter(i); | |
213 if (var->IsContextSlot()) { | 212 if (var->IsContextSlot()) { |
214 int parameter_offset = StandardFrameConstants::kCallerSPOffset + | 213 int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
215 (num_parameters - 1 - i) * kPointerSize; | 214 (num_parameters - 1 - i) * kPointerSize; |
216 // Load parameter from stack. | 215 // Load parameter from stack. |
217 __ LoadP(r3, MemOperand(fp, parameter_offset), r0); | 216 __ LoadP(r3, MemOperand(fp, parameter_offset), r0); |
218 // Store it in the context. | 217 // Store it in the context. |
219 MemOperand target = ContextMemOperand(cp, var->index()); | 218 MemOperand target = ContextMemOperand(cp, var->index()); |
220 __ StoreP(r3, target, r0); | 219 __ StoreP(r3, target, r0); |
221 | 220 |
222 // Update the write barrier. | 221 // Update the write barrier. |
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234 } | 233 } |
235 | 234 |
236 // Register holding this function and new target are both trashed in case we | 235 // Register holding this function and new target are both trashed in case we |
237 // bailout here. But since that can happen only when new target is not used | 236 // bailout here. But since that can happen only when new target is not used |
238 // and we allocate a context, the value of |function_in_register| is correct. | 237 // and we allocate a context, the value of |function_in_register| is correct. |
239 PrepareForBailoutForId(BailoutId::FunctionContext(), | 238 PrepareForBailoutForId(BailoutId::FunctionContext(), |
240 BailoutState::NO_REGISTERS); | 239 BailoutState::NO_REGISTERS); |
241 | 240 |
242 // Possibly set up a local binding to the this function which is used in | 241 // Possibly set up a local binding to the this function which is used in |
243 // derived constructors with super calls. | 242 // derived constructors with super calls. |
244 Variable* this_function_var = info->scope()->this_function_var(); | 243 Variable* this_function_var = scope()->this_function_var(); |
245 if (this_function_var != nullptr) { | 244 if (this_function_var != nullptr) { |
246 Comment cmnt(masm_, "[ This function"); | 245 Comment cmnt(masm_, "[ This function"); |
247 if (!function_in_register_r4) { | 246 if (!function_in_register_r4) { |
248 __ LoadP(r4, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | 247 __ LoadP(r4, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
249 // The write barrier clobbers register again, keep it marked as such. | 248 // The write barrier clobbers register again, keep it marked as such. |
250 } | 249 } |
251 SetVar(this_function_var, r4, r3, r5); | 250 SetVar(this_function_var, r4, r3, r5); |
252 } | 251 } |
253 | 252 |
254 // Possibly set up a local binding to the new target value. | 253 // Possibly set up a local binding to the new target value. |
255 Variable* new_target_var = info->scope()->new_target_var(); | 254 Variable* new_target_var = scope()->new_target_var(); |
256 if (new_target_var != nullptr) { | 255 if (new_target_var != nullptr) { |
257 Comment cmnt(masm_, "[ new.target"); | 256 Comment cmnt(masm_, "[ new.target"); |
258 SetVar(new_target_var, r6, r3, r5); | 257 SetVar(new_target_var, r6, r3, r5); |
259 } | 258 } |
260 | 259 |
261 // Possibly allocate RestParameters | 260 // Possibly allocate RestParameters |
262 int rest_index; | 261 int rest_index; |
263 Variable* rest_param = info->scope()->rest_parameter(&rest_index); | 262 Variable* rest_param = scope()->rest_parameter(&rest_index); |
264 if (rest_param) { | 263 if (rest_param) { |
265 Comment cmnt(masm_, "[ Allocate rest parameter array"); | 264 Comment cmnt(masm_, "[ Allocate rest parameter array"); |
266 if (!function_in_register_r4) { | 265 if (!function_in_register_r4) { |
267 __ LoadP(r4, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | 266 __ LoadP(r4, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
268 } | 267 } |
269 FastNewRestParameterStub stub(isolate()); | 268 FastNewRestParameterStub stub(isolate()); |
270 __ CallStub(&stub); | 269 __ CallStub(&stub); |
271 function_in_register_r4 = false; | 270 function_in_register_r4 = false; |
272 SetVar(rest_param, r3, r4, r5); | 271 SetVar(rest_param, r3, r4, r5); |
273 } | 272 } |
274 | 273 |
275 Variable* arguments = info->scope()->arguments(); | 274 Variable* arguments = scope()->arguments(); |
276 if (arguments != NULL) { | 275 if (arguments != NULL) { |
277 // Function uses arguments object. | 276 // Function uses arguments object. |
278 Comment cmnt(masm_, "[ Allocate arguments object"); | 277 Comment cmnt(masm_, "[ Allocate arguments object"); |
279 if (!function_in_register_r4) { | 278 if (!function_in_register_r4) { |
280 // Load this again, if it's used by the local context below. | 279 // Load this again, if it's used by the local context below. |
281 __ LoadP(r4, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | 280 __ LoadP(r4, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
282 } | 281 } |
283 if (is_strict(language_mode()) || !has_simple_parameters()) { | 282 if (is_strict(language_mode()) || !has_simple_parameters()) { |
284 FastNewStrictArgumentsStub stub(isolate()); | 283 FastNewStrictArgumentsStub stub(isolate()); |
285 __ CallStub(&stub); | 284 __ CallStub(&stub); |
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3611 __ StoreP(value, MemOperand(fp, frame_offset), r0); | 3610 __ StoreP(value, MemOperand(fp, frame_offset), r0); |
3612 } | 3611 } |
3613 | 3612 |
3614 | 3613 |
3615 void FullCodeGenerator::LoadContextField(Register dst, int context_index) { | 3614 void FullCodeGenerator::LoadContextField(Register dst, int context_index) { |
3616 __ LoadP(dst, ContextMemOperand(cp, context_index), r0); | 3615 __ LoadP(dst, ContextMemOperand(cp, context_index), r0); |
3617 } | 3616 } |
3618 | 3617 |
3619 | 3618 |
3620 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { | 3619 void FullCodeGenerator::PushFunctionArgumentForContextAllocation() { |
3621 DeclarationScope* closure_scope = scope()->GetClosureScope(); | 3620 Scope* closure_scope = scope()->ClosureScope(); |
3622 if (closure_scope->is_script_scope() || | 3621 if (closure_scope->is_script_scope() || |
3623 closure_scope->is_module_scope()) { | 3622 closure_scope->is_module_scope()) { |
3624 // Contexts nested in the native context have a canonical empty function | 3623 // Contexts nested in the native context have a canonical empty function |
3625 // as their closure, not the anonymous closure containing the global | 3624 // as their closure, not the anonymous closure containing the global |
3626 // code. | 3625 // code. |
3627 __ LoadNativeContextSlot(Context::CLOSURE_INDEX, ip); | 3626 __ LoadNativeContextSlot(Context::CLOSURE_INDEX, ip); |
3628 } else if (closure_scope->is_eval_scope()) { | 3627 } else if (closure_scope->is_eval_scope()) { |
3629 // Contexts created by a call to eval have the same closure as the | 3628 // Contexts created by a call to eval have the same closure as the |
3630 // context calling eval, not the anonymous closure containing the eval | 3629 // context calling eval, not the anonymous closure containing the eval |
3631 // code. Fetch it from the context. | 3630 // code. Fetch it from the context. |
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3767 | 3766 |
3768 DCHECK(Assembler::IsCrSet(Assembler::instr_at(cmp_address))); | 3767 DCHECK(Assembler::IsCrSet(Assembler::instr_at(cmp_address))); |
3769 | 3768 |
3770 DCHECK(interrupt_address == | 3769 DCHECK(interrupt_address == |
3771 isolate->builtins()->OnStackReplacement()->entry()); | 3770 isolate->builtins()->OnStackReplacement()->entry()); |
3772 return ON_STACK_REPLACEMENT; | 3771 return ON_STACK_REPLACEMENT; |
3773 } | 3772 } |
3774 } // namespace internal | 3773 } // namespace internal |
3775 } // namespace v8 | 3774 } // namespace v8 |
3776 #endif // V8_TARGET_ARCH_PPC | 3775 #endif // V8_TARGET_ARCH_PPC |
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